Detective Comics #31
| Cover Credits |
| Artist: Bob Kane |
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Comic Title: Detective Comics #31
Publisher: DC
(Detective Comics, Inc.)
Address: 480 Lexington Avenue, New York, NY
Cover Date: September 1939
Approx. On Sale Date:
August 10, 1939 Copyright Date July 30, 1939
Source: Library of Congress, Periodicals 1939
Until 1958 DC did not report actual on sale dates to the copyright office
The publication dates listed in LoC records are NOT release dates.
Frequency: Monthly
Cover Price: $0.10
Page Count: 64
Editor: Vincent A. Sullivan
| Pages | Feature | Note |
| FC | Batman | Bob Kane (a) |
| IFC | Indicia; House Ad | Vincent A. Sullivan (ed), Detective Comics Inc.; All-American Comics #6, Movie Comics #5 |
| 1 | Bat Man | (No Title) |
| 2 | Bat Man | |
| 3 | Bat Man | |
| 4 | Bat Man | |
| 5 | Bat Man | |
| 6 | Bat Man | |
| 7 | Bat Man | |
| 8 | Bat Man | |
| 9 | Bat Man | |
| 10 | Bat Man | |
| 11 | Text Feature | "Detective Stamp Page" |
| 12 | Fact Feature | "Crime Never Pays" |
| 13 | Filler | "Policeman" |
| 14 | Buck Marshall | "Killer's Bait" (B&W) |
| 15 | Buck Marshall | |
| 16 | Buck Marshall | |
| 17 | Buck Marshall | |
| 18 | Buck Marshall | |
| 19 | Buck Marshall | |
| 20 | Spy | (No Title) |
| 21 | Spy | |
| 22 | Spy | |
| 23 | Spy | |
| 24 | Spy | |
| 25 | Spy | |
| 26 | Larry Steele Private Detective | (No Title) |
| 27 | Larry Steele Private Detective | |
| 28 | Larry Steele Private Detective | |
| 29 | Larry Steele Private Detective | |
| 30 | Larry Steele Private Detective | |
| 31 | Larry Steele Private Detective | |
| 32 | Text Story | "Newspaper Nightmare" |
| 33 | Text Story | |
| 34 | Speed Saunders | "The Mammoth Mystery" |
| 35 | Speed Saunders | |
| 36 | Speed Saunders | |
| 37 | Speed Saunders | |
| 38 | Speed Saunders | |
| 39 | Speed Saunders | |
| 40 | Bruce Nelson | (No Title) |
| 41 | Bruce Nelson | |
| 42 | Bruce Nelson | |
| 43 | Bruce Nelson | |
| 44 | Bruce Nelson | |
| 45 | Bruce Nelson | |
| 46 | Cosmo, the Phantom of Disguise | (No Title) (B&W) |
| 47 | Cosmo, the Phantom of Disguise | |
| 48 | Cosmo, the Phantom of Disguise | |
| 49 | Cosmo, the Phantom of Disguise | |
| 50 | Cosmo, the Phantom of Disguise | |
| 51 | Cosmo, the Phantom of Disguise | |
| 52 | Slam Bradley | (No Title) |
| 53 | Slam Bradley | |
| 54 | Slam Bradley | |
| 55 | Slam Bradley | |
| 56 | Slam Bradley | |
| 57 | Slam Bradley | |
| 58 | Slam Bradley | |
| 59 | Slam Bradley | |
| 60 | Slam Bradley | |
| 61 | Slam Bradley | |
| 62 | Slam Bradley | |
| 63 | Slam Bradley | |
| 64 | Slam Bradley | |
| IBC | House Ad | New York World's Fair Comics (#1) |
| BC | Ad | Johnson Smith Co. (Novelties) |
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